“A blade of grass is a commonplace on Earth; it would be a miracle on Mars. Our descendants on Mars will know the value of a patch of green. And if a blade of grass is priceless, what is the value of a human being?”

— Carl Sagan , book Pale Blue Dot

Source: Pale Blue Dot: A Vision of the Human Future in Space

Last update June 3, 2021. History

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Carl Sagan 365

American astrophysicist, cosmologist, author and science ed… 1934–1996

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